Dashboard / CVE-2026-12309

CVE-2026-12309

MEDIUM
MEDIUM Priority: 0.02 BB Relevance: 73/100
Published: 2026-06-16 Modified: 2026-10-26 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
S: Unchanged
C: Low
I: None
A: Low

Description

Memory safety bug fixed in Thunderbird 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.

Weakness Classification (1)

Affected Software (4)

VendorProductVersion
mozilla firefox < 140.12.0
mozilla firefox < 152.0.0
mozilla thunderbird < 140.12.0
mozilla thunderbird < 152.0.0

References & Advisories (5)

Bug Bounty Relevance

73 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

6.5 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L

EPSS — Exploitation Probability

0.24%
Raw Score 0.002350
Percentile 14.5%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00235
2026-10-28
0.00235

Intelligence Sources

nvd ref →

External Links